Accumulated Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 5	[1]	$ 4,184
Other comprehensive income (loss) before reclassifications	1,455		(369)
Amounts reclassified from accumulated comprehensive income:
Realized gain on sale of securities	(1,128)		(4)
Impairment expense	0		0
Reclassified amounts before tax	(1,128)		(4)
Tax expense	434		2
Total reclassifications net of tax	(694)		(2)
Net current period other comprehensive income (loss)	761		(371)
Ending balance	$ 766		$ 3,813

[1] Derived from audited consolidated financial statements